In some other cases oil-producing nations pay oil firms by allowing them to keep a portion of the oil the company pumps.
在有些合同中，石油生产国的支付方式是让石油公司保留部分开采出来的石油。
In some other cases oil-producing nations pay oil firms by allowing them to keep a portion of the oil the company pumps.
在有些合同中，石油生产国的支付方式是让石油公司保留部分开采出来的石油。
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